Question

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Answer 1

2.$( frac{9y}{x}- frac{9y}{x+y})*(frac{x+y}{3y})^{2}= frac{9y*(x+y)-9xy}{x*(x+y)}* frac{(x+y)^{2}}{9y^2}= frac{9y*(x+y-x)}{x}* frac{x+y}{9y^2}= frac{9y^2}{x}* frac{x+y}{9y^2}= frac{9^2}{x}* frac{x+y}{9y^2}= frac{1}{x}*(x+y)= frac{x+y}{x}$

Answer 2

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